Portable speaker



1. Portable speaker

1.1 is a top perspective view of a portable speaker showing our new design;

1.2 is a front elevation view thereof;

1.3 is a rear elevation view thereof;

1.4 is a left side elevation view thereof;

1.5 is a right side elevation view thereof;

1.6 is a top plan view thereof; and

1.7 is a bottom plan view thereof.

The broken lines shown in figure 1.7 depict portions of the portable speaker that form no part of the claimed design. 

CLAIM The ornamental design for a portable speaker, as shown and described. 